Re: gEDA-user: TL431

[Wojciech Kazubski <wk0@xxxxx>]

> Wojciech Kazubski wrote:
> > -> Anyone use these shunt regulators?  I'm wondering about the max voltage. 
>  >> Or set up your mailer to use a fixed-width font..
> Yes, that was it - thanks.
> 
> I suspect this TL431 isn't a good device for my app.  I have an LM317 to 
> give me around +12V for bootstap voltage to a high-side mosfet driver. 
> The average current is very low, but the peaks can get pretty high.  The 
> LM317 circuit is solid, just uses a lot of parts.  I was trying to 
> replace the LM317 with TL431 - but simulation does not look promising.
> 
I did not know what the regulator will be used for. LM317 can replace both TL431 and series transistor. The output current willl be limited to 1A or more. If input voltage is greater than 40V, you can use high voltage version LM317HV.

Wojciech Kazubski


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